ウェブ-HACKS 「とりあえずやってみよう！」ブログでタグ「Ruby」が付けられているもの

#!/usr/bin/ruby -Ks
require 'erb'
require 'yaml'
include ERB::Util
$KCODE = 's'

class CreateHtml

   def initialize
      @config = YAML.load_file("config.yaml")
      @erb = ERB.new(File.read(@config[:template]), nil, "-")
   end

   def generate
      objs = input
      for obj in objs do
         output(obj)
      end
   end

   def input
      objs = Array.new
      count = 0
      open(@config[:data]).each{|input|
         if count == 0
            @headers = input.split
            count = 1
            next
         end
         h = Hash.new
         arr = input.split
         @headers.size.times{|i|
            h.store(@headers[i], arr[i])
         }
         objs.push(h)
      }
      return objs
   end

   def output(o)
     open(@config[:output]+"/"+o['id']+".html", "w"){ |output|
         output.write(@erb.result(binding()))
      }
   end
end

obj = CreateHtml.new
obj.generate

• RubyでYAMLを使う
  

:template: template.rhtml
:data: data.txt
:output: output

    page = @agent.get('http://example.com')
    search_form = page.forms.with.action('http://example.com/search.html').first
    search_form.keyword-field = keyword

    page = @agent.get('http://example.com')
    search_form = page.forms.with.action('http://example.com/search.html').first
    search_form['keyword-field'] = keyword

$ ruby script/plugin install http://svn.rails2u.com/public/plugins/trunk/active_heart/

+ ./active_heart/init.rb
+ ./active_heart/lib/active_record_messages_ja.rb
+ ./active_heart/lib/iso2022jp_mailer.rb
+ ./active_heart/lib/trans_sid.rb

例）
class Bookmark < ActiveRecord::Base
  set_field_names :title => 'タイトル', :url => 'URL'
  validates_presence_of :title, :url, 
                        :message => "が未入力です"
end

warn 'ActiveHeart is obsolute plugin!'
warn 'Please use Ruby-GetText or jpmobile'

require_dependency 'active_record_messages_ja'if defined? ActiveRecord::Base
# Comment Out!
#require_dependency 'trans_sid'
#require_dependency 'iso2022jp_mailer' if defined? ActionMailer::Base

• Rubyist Magazine - RubyOnRails を使ってみる 【第 5 回】 ActiveHeart

    if @item.save
      flash[:notice] = 'Item was successfully created.'
      redirect_to("http://www.sample.com/") 
    else
      render :action => 'new'
    end

• コントローラーに以下メソッドをprivateメソッドとして準備しました。

  def sendmail(title, content, mail)
    email = RMailer.create_sent( title, content, to )
    email.set_content_type("text/html")
    ScrapMailer.deliver(email)
  end

• まずはユーザ登録（メールアドレスとパスワードくらいで十分でしょう）
• URLを入力するとサーバに保存できる
• どこからでも登録したサイトが確認できて、ブックマークと違いリンクが消えていることがない（データをサーバに保存するから）

• テキストプレーンで記載できるのでXMLより楽に記載できる（タグとかを記載しなくてよい）
• データを「配列」、「ハッシュ」、「スカラー」を記載するとオブジェクトに変換してくれる
• 設定ファイル、ログファイル等に使うと便利

• YAML Ain't Markup Language (YAML) Version 1.1
  

• 配列

- item1
- item2
- item3

• ハッシュ
  

name:  Taro
age: 28
email: test@test.test

• オブジェクトをYAMLフォーマットでダンプする（Ruby　→　テキスト）

#!/usr/bin/ruby -Ks
require 'yaml'
$KCODE = 's'

hash = {"name" => "Taro", "age" => 28, "email" => ["test1@test.test", "test2@test.test"] }
# YAMLフォーマットでダンプする
puts YAML.dump(hash)

# 実行結果
> ruby main.rb
---
name: Taro
age: 28
email:
- test1@test.test
- test2@test.test

• YAML形式の設定ファイルをRubyで取り込む

# config.yamlファイル
name: Taro
age: 28
email:
- test1@test.test
- test2@test.test

#!/usr/bin/ruby -Ks
require 'pp'
require 'yaml'
$KCODE = 's'

# YAMLフォーマットでダンプする
config = YAML.load_file("config.yaml")
pp config

# 実行結果
> ruby main.rb
{"name" => "Taro", 
 "age" => 28, 
 "email" => ["test1@test.test", "test2@test.test"] }

• YAML - idesaku blog
• tnomuraのブログ : YAML その２
  

#!/usr/bin/ruby -Ks
require 'hpricot'
require 'mechanize'
require 'kconv'
$KCODE = 's'

class Crawler
  def initialize(wait_time, internal, ngwords)
    @agent = WWW::Mechanize.new
    @wait_time = wait_time
    @internal = internal
    @ngwords = ngwords
    @links = []
  end

  def http_connect(url)
    print "OK\n"
    @page = @agent.get(url)
  end

  def crawl(root)
    @page = @agent.get(root)
    @page.links.with.href(%r{}).each{|link|
      if link.href =~ /^http/
        url = link.href
      else
        %r|http://([^/]*)/| =~ root
        url = 'http://' + $1 + '/' + link.href
      end
      @links << url.sub(/#.*$/,'')
    }
    @links.uniq!.delete(root)
    puts @links
    @links.each{|link|
      begin
        print link if $DEBUG
        next unless access_test?(link)
        http_connect(link)
        sleep @wait_time
      rescue => ex
        puts ex.message
      end
    }
  end

 private
  def access_test?(link)
    unless %r|#{@internal}| =~ link
      print "External Link.\n"
      return false
    end
    @ngwords.each{|ng|
      if /#{ng}/ =~ link
        print "NG Word\n"
        return false
      end
    }
    true
  end
end

• Rubyでスクレーピング(mechanizeとhpricot)
• Perlでクロールする（LWP::UserAgent）
  
• RubyScraping - FrontPage
• Greenbear Diary - RubyでHTMLとWebを操作するためのライブラリ、HpricotとWWW::Mechanize , HikiReload

• README.ja.rd

#!/usr/bin/ruby -Ks
require 'erb'
include ERB::Util

$KCODE = 's'

filename = ARGV[0]
erb = ERB.new(File.read(filename), nil, "-")

# hash create.
h = Hash.new
title = "title_key"
title_value = "title_val"
h.store(title, title_value)

detail = "detail_key"
detail_value = "detail_val"
h.store(detail, detail_value)

# list create.
list = Array.new
list.push(h)

print erb.result(binding())

<dl>
<%- i = 0 -%>
<%- for item in list -%>
<dt><%=h item['title_key'] %></dt>
<dd><%=h item['detail_key'] %></dd> 
<%- i += 1 -%>
<%- end -%>
</dl>

>ruby create_html.rb sample.rhtml

title_val
detail_val

• RubyでHTMLファイル生成（Excelデータを一括でHTMLファイルにする）
  

• Rubyist Magazine - 標準添付ライブラリ紹介 【第 10 回】 ERB

• ERBしてみよう - okazukiの日記

• SMTP認証でメール送信できる
• HTMLメールが送信できる
• classとして独立する

require 'kconv'
require 'net/smtp'

class SimpleMail
  def initialize(from_address, smtp_server)
    @from_address = from_address
    @smtp_server = smtp_server
    @smtp_port = 25
    @smtp_domain = smtp_server
  end

  def send(to_address, subject, message)
    contents = mail_contents(subject) + "\n"
    contents << message
    Net::SMTP.start(@smtp_server) {|smtp|
      smtp.sendmail( contents, @from_address, to_address )
    }
  end

  def send_html(to_address, subject, message)
    contents = mail_contents(subject)
    contents << 'Content-Type: text/html; charset="iso-2022-jp"\n\n'
    contents << message.sub(/content="text\/html; charset=UTF-8"/, 'content="text/html; charset=iso-2022-jp"').tojis
    Net::SMTP.start(@smtp_server) {|smtp|
      smtp.sendmail( contents, @from_address, to_address )
    }
  end

  def send_auth(to_address, subject, message, account, password)
    contents = mail_contents(subject) + "\n"
    contents << message
    Net::SMTP.start(@smtp_server, @smtp_port, @smtp_domain, account, password) {|smtp|
      smtp.sendmail( contents, @from_address, to_address )
    }
  end

  private
  def mail_contents(subject)
    contents = "Subject: #{subject.tojis}\n"
  end
end

    #　例：HTMLメール送信
    SimpleMail.new("from@address","smtp_server").send_html("to@address", subject, message)

Rubyist Magazine出張版 Ruby on Windows

posted with amazlet on 08.01.18

cuzic
毎日コミュニケーションズ (2007/12/19)
売り上げランキング: 8193

Amazon.co.jp で詳細を見る

• 文法チェック(-c)
  

>ruby -c sample.rb
Syntax OK

• デバッグモード(-d)

>ruby -d sample.rb

--- sample.rg ---
print debug_string if $DEBUG

• Rubyのバージョンの確認（--version)
  

>ruby --version
ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-mswin32]

$ gem install hpricot
$ gem install mechanize

#!/usr/bin/ruby -Ks
require 'hpricot'
require 'mechanize'
require 'kconv'
require 'jcode'

$KCODE = 's'

# 初期設定
@user_agent = 'Mac Safari'
@wait_time = 5
@url = 'taget_url'

def http_connect(url, keyword)
  puts url if $DEBUG
  @page = nil;@price = nil;@content = ""
  begin
    @agent = WWW::Mechanize.new
    @agent.user_agent_alias = @user_agent
    @page = @agent.get(url)
  rescue
    puts "#{keyword}#{@drim}CONNECTION ERROR"
    return
  end
  link = @page.links.with.href(%r{http://target_url/\w+?/}).last
  puts link.href if $DEBUG
  if(link == nil || link.href.empty?)
    puts "#{keyword}#{@drim}LINKERROR"
    return
  end
  @page = @agent.click(link)
  doc = @page.root
  @name = (doc/"span.item_name").inner_html.tosjis
  (doc/"span.item").each {|item|
    item_str = item.inner_html.tosjis
    item_str.scan(/
(.*?)<\/div>
(.*?)<\/div>/){|title, content|
      @content += ":#{title}:#{content}" # if $DEBUG
    }
    item_str.scan(/([\d+] 円)/){|price|
      @price = price
    }
    puts "#{keyword}#{@drim}#{@price}#{@drim}#{@name}#{@drim}#{@content}#{@drim}#{link.href}"
  }
end

def generate_url
  puts ARGV[0] if $DEBUG

  File.open(ARGV[0]){|f|
    f.each{|line|
      keyword = line.chomp!
      puts keyword if $DEBUG
      target="#{@targeturl}?keyword=#{keyword}"
      http_connect(target, keyword)
      sleep @wait_time
    }
  }
end

puts @header
generate_url

require 'jcode'

• Rubyリファレンスマニュアル - FAQ::日本語の取り扱い
• Rubyリファレンスマニュアル - jcode
  
• http://blade.nagaokaut.ac.jp/cgi-bin/vframe.rb/ruby/ruby-list/31741?31634-32001

#!/usr/bin/ruby
require 'mechanize'
require 'net/smtp'
require 'kconv'

url = "http://localhost/"
wait_time = 15
@from_address = "from@mail_domain"
@send_address = "send@mail_domain"
agent = WWW::Mechanize.new

def send_alert( msg )
  body = [ "Subject: HTTP Access Error\n", "\n", msg ]
  Net::SMTP.start('mail_server') do |smtp|
    smtp.sendmail( body, @from_address, @send_address )
  end
  exit
end

begin
  while 1
    page = agent.get(url)
    s = page.title.tosjis
    if s =~ /match_word/
      puts "#{url}: #{s}\n" if $DEBUG
    else
      puts "#{url}: #{s}=#{match_str.tosjis}\n" if $DEBUG
      send_alert("#{url}: #{s}\n")
    end
    sleep wait_time
  end
rescue => ex
  puts "#{url}: #{ex.message}\n" if $DEBUG
  send_alert("#{url}:#{ex.message}\n")
end

• http://mono.kmc.gr.jp/~yhara/d/?date=20070205
• http://www.ibm.com/developerworks/jp/linux/library/l-spider/

=begin
 「Hello,Ruby」取得メソッド
1）　普通にメソッドを作成し呼び出す
=end
def hello_world()
  hello = "Hello, Ruby."
  return hello
end

puts hello_world()  #=> Hello, Ruby.

=begin
2） 省略形

    * Rubyではreturnを省略すると最後の式の値が返る

    * メソッドの括弧は省略できる

    * 改行が処理の区切りだが、「;」で区切ることも可能

　※上記をふまえ以下のように変更
=end
def hello_world; hello="Hello, Ruby.";end
puts hello_world    #=> Hello, Ruby.

    # Include your application configuration below
    ActionMailer::Base.delivery_method = :smtp
    ActionMailer::Base.server_settings = {
      :address  => "address",
      :port  => 25,
      :domain  => 'domain',
      :user_name  => 'user_name',
      :password  => 'password',
      :authentication  => :login
        }

    $ ruby script/generate mailer AccountMailer sent
          exists  app/models/
          create  app/views/account_mailer
          exists  test/unit/
          create  test/fixtures/account_mailer
          create  app/models/account_mailer.rb
          create  test/unit/account_mailer_test.rb
          create  app/views/account_mailer/sent.rhtml
          create  test/fixtures/account_mailer/sent

 
   $ ruby script/generate mailer AccountMailer sent
          exists  app/models/
          create  app/views/account_mailer
          exists  test/unit/
          create  test/fixtures/account_mailer
          create  app/models/account_mailer.rb
          create  test/unit/account_mailer_test.rb
          create  app/views/account_mailer/sent.rhtml
          create  test/fixtures/account_mailer/sent

※mytask/app/views/account_mailer/sent.rhtml を編集する

    def sendmail
      @user = User.find(params[:id])
      AccountMailer.deliver_sent(@user)
    end

• まずはrootユーザに変更

    $ su - root
    Password:

• gemでlogin_generatorをインストールする

# gem install login_generator
Bulk updating Gem source index for: http://gems.rubyforge.org
Successfully installed login_generator-1.2.2

• インストールが正常に完了したら、以下コマンドで作成開始

 $ ruby script/generate login account
      create  lib/login_system.rb
      create  app/controllers/account_controller.rb
      create  test/functional/account_controller_test.rb

$ ruby script/generate scaffold  --help
Usage: script/generate scaffold ModelName [ControllerName] [action, ...]

Rails Info:
    -v, --version                    Show the Rails version number and quit.
    -h, --help                       Show this help message and quit.

General Options:
    -p, --pretend                    Run but do not make any changes.
    -f, --force                      Overwrite files that already exist.
    -s, --skip                       Skip files that already exist.
    -q, --quiet                      Suppress normal output.
    -t, --backtrace                  Debugging: show backtrace on errors.
    -c, --svn                        Modify files with subversion. (Note: svn must be in path)
・・・省略

$ ruby script/generate scaffold project mytask
      exists  app/controllers/
      exists  app/helpers/
      exists  app/views/mytask
      exists  app/views/layouts/
      exists  test/functional/
  dependency  model
      exists    app/models/
      exists    test/unit/
      exists    test/fixtures/
・・・省略

• mytask_development
• mytask_test
• mytask_production

    mysql> create database mytask_development;
    mysql> create database mytask_production;
    mysql> grant all on mytask_development.* to username@localhost identified by 'password';
    mysql> grant all on mytask_production.* to username@localhost identified by 'password';

    create table projects (
      id int unsigned auto_increment,
      name varchar(128) not null,
      content varchar(255),
      task_count int default 0,
      status enum('close','open') default 'close',
      created_at timestamp,
      updated_at timestamp,
      limited_at timestamp,
      primary key  (id),
      index status_idx (status)
    );

    create table tasks (
      id int unsigned auto_increment,
      project_id int unsigned not null,
      name varchar(128) not null,
      content text,
      status enum('yet', 'exec', 'finish') default 'yet',
      created_at timestamp,
      updated_at timestamp,
      limited_at timestamp,
      primary key  (id),
      index project_id_idx (project_id),
      index status_idx (status)
    );

development:
  adapter: mysql
  database: mytask_development
  username: username
  password: password
  socket: /var/lib/mysql/mysql.sock
  encoding: utf8

#KCODE = 'u'
# Be sure to restart your web server when you modify this file.

$ rails mytask
      create  app/controllers
      create  app/helpers
      create  app/models
      create  app/views/layouts
      create  config/environments
      create  components
      create  db
      ・・・省略

$ cd mytask/
$ ruby script/server
=> Booting WEBrick...
=> Rails application started on http://0.0.0.0:3000

$ ruby -v
ruby 1.8.5 (2007-09-24 patchlevel 114) [i386-linux] 

$ mysql --version
mysql  Ver 14.12 Distrib 5.0.27, for redhat-linux-gnu (i686) using readline 5.0

    $ tar xvzf rubygems-0.9.4.tgz
    $ ls
    rubygems-0.9.4  rubygems-0.9.4.tgz
    $ cd rubygems-0.9.4
    $ ls
    ChangeLog  LICENSE.txt  Rakefile  TODO  doc       gemspecs  pkgs             redist   setup.rb
    GPL.txt    README       Releases  bin   examples  lib       post-install.rb  scripts  test

    # su - root
    # ruby setup.rb

# gem install rails --include-dependencies
$ rails -v
Rails 1.2.4

次回こそ、Railsでアプリ作成に入ります。

1. タスクを書き出せる（リストで見れる）
2. タスクに期限を設定できる
3. タスクには、未着手、実行中、完了等のステータスがある
4. メールで期限がきたら教えてくれる
5. カテゴリごとにタスクを纏められる
6. タスクは共有できる
7. 完了までにかかった時間を確認できる